Suckers and Other Bursal Structures of Pomphorhynchus bulbocolli and Acanthocephalus dirus (Acanthocephala)

1991 ◽  
Vol 77 (3) ◽  
pp. 437 ◽  
Author(s):  
Lester R. Doyle ◽  
Larry N. Gleason
Keyword(s):  
Acanthocephalus Dirus

Egg Dispersal in the Acanthocephalan Acanthocephalus dirus: Field Data

2012 ◽  
Vol 98 (4) ◽  
pp. 894-896 ◽  
Author(s):  
G. M. Wahl ◽  
T. C. Sparkes
Keyword(s):  
Field Data ◽  
Acanthocephalus Dirus

Altered Color, Behavior and Predation Susceptibility of the Isopod Asellus intermedius Infected with Acanthocephalus dirus

1979 ◽  
Vol 65 (4) ◽  
pp. 667 ◽  
Author(s):  
Joseph W. Camp ◽  
Harry W. Huizinga
Keyword(s):  
Acanthocephalus Dirus

Dispersal In the Acanthocephalan Acanthocephalus dirus

2011 ◽  
Vol 97 (6) ◽  
pp. 1101-1105 ◽  
Author(s):  
Darin A Kopp ◽  
Daniel A Elke ◽  
Sara C Caddigan ◽  
Amit Raj ◽  
Lizbeth Rodriguez ◽  
...  
Keyword(s):  
Acanthocephalus Dirus

Parasite-related modification of mating behaviour and refuge use in the aquatic isopod Caecidotea intermedius: neurological correlates

Behaviour ◽  
2016 ◽  
Vol 153 (8) ◽  
pp. 947-961 ◽  
Author(s):  
Darin A. Kopp ◽  
Sonya M. Bierbower ◽  
Alexandrea D. Murphy ◽  
Kimberly Mormann ◽  
Timothy C. Sparkes
Keyword(s):  
Immune System ◽  
Mating Behaviour ◽  
Neural Tissue ◽  
Parasite Infection ◽  
Intermediate Hosts ◽  
Refuge Use ◽  
Behavioural Changes ◽  
Dopaminergic Systems ◽  
Acanthocephalus Dirus

The acanthocephalan Acanthocephalus dirus is a trophically transmitted parasite that infects freshwater isopods as intermediate hosts and fish as definitive hosts. Using a laboratory-based experiment, we examined if parasite infection was associated with changes in mating behaviour, refuge use and neurochemical levels of infected isopods (Caecidotea intermedius). Infected isopods were less likely to engage in mating behaviour and more likely to be located in the open than uninfected isopods. Infected isopods also contained lower levels of serotonin (5-HT) and dopamine (DA) and had a greater mass of neural tissue (CNS) than uninfected isopods. We propose that the parasite-related changes in mating behaviour and refuge use may be modulated by the serotonergic and dopaminergic systems. We also suggest that the parasites could potentially be modulating these behavioural changes by exploiting the neural-immune system of the hosts through their neuroinflammatory responses.

Intra-specific host sharing in the manipulative parasiteAcanthocephalus dirus: does conflict occur over host modification?

Parasitology ◽  
2004 ◽  
Vol 129 (3) ◽  
pp. 335-340 ◽  
Author(s):  
T. C. SPARKES ◽  
V. M. WRIGHT ◽  
D. T. RENWICK ◽  
K. A. WEIL ◽  
J. A. TALKINGTON ◽  
...  
Keyword(s):  
Field Survey ◽  
Colour Change ◽  
The Body ◽  
Potential Significance ◽  
Specific Host ◽  
Creek Chub ◽  
Acanthocephalan Parasite ◽  
Mixed Stage ◽  
Acanthocephalus Dirus ◽  
Host Modification

The acanthocephalan parasiteAcanthocephalus dirusinduces a colour change in the intermediate host, the aquatic isopodCaecidotea intermedius, which increases transmission to definitive hosts (creek chub, sunfish). We examined the potential for conflict to occur between infective (cystacanth) and non-infective (acanthor, acanthella) stages ofA. dirusover the level of colour modification that should be induced when these stages share a host. Using a field survey, we showed that host sharing by infective and non-infective stages was relatively common and that infective and non-infective stages differed in their effects on colour modification. Non-infective stages induced a colour change over 40% of the body, whereas infective stages induced a colour change over 80%. Thus, conflict could occur between stages over the level of modification that should be induced. We then showed that mixed-stage infections induced a colour change in the host that was consistent with the level of modification induced by the infective stage. We discuss the potential significance of these results to patterns of host modification and their effects on stage-related survival in nature.

scholarly journals Pathological manifestation of the Acanthocephalus dirus in Thunnus albacares

2016 ◽  
Vol 6 (5) ◽  
pp. 350-353 ◽  
Author(s):  
Alagarsamy Sakthivel ◽  
Ayyaru Gopalakrishnan ◽  
Periyasamy Selvakumar
Keyword(s):  
Thunnus Albacares ◽  
Pathological Manifestation ◽  
Acanthocephalus Dirus

Egg fibrils and transmission in the acanthocephalan Acanthocephalus dirus

2019 ◽  
Vol 118 (4) ◽  
pp. 1225-1229 ◽  
Author(s):  
Alaina C. Pfenning ◽  
Timothy C. Sparkes
Keyword(s):  
Acanthocephalus Dirus
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